"Glass containers are never allowed on the parkway, that’s for safety reasons," Lewis told KCRA 3. "Obviously, we don’t want to see broken glass on the beach and little kids (cut) their feet on it. Also, the bottle caps that come off those containers, they’re real sharp, as well."

River rafters have gotten very resourceful in attempting to hide their contraband from rangers.

"People are getting creative in how they try to sneak their alcohol in. We’re getting pretty good at finding it too, though," Lewis said. "I’ve seen people actually sneak in whiskey in Super Soakers -- you know, the squirt guns. I’ve seen margaritas in CamelBaks, that kind of thing," Lewis told KCRA 3.

Rangers will be keeping a sharp eye for life vests, too.

"By law, every person in the raft has to have one," Lewis said. "If you’re under 13 years old, you have to have that jacket on, if you’re even ankle-deep in the water."

As for those who might want to indulge in medical cannabis on the river, that activity is also prohibited.

"Even if you have a medical marijuana card, it is still illegal to smoke marijuana in public in the county of Sacramento," Lewis told KCRA 3. "So, regardless of the card, if you’re smoking in the park, you can be cited for it."

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